Not enough oxygen to sustain us, but undoubtedly enough for some kind of native animal life.
6 seconds sound clip from the The Angry Red Planet movie soundboard.
You can hear this line at 00:28:27 in the Blu-ray version of the movie.
Quote context
[...]
- Aw, that's all right, Sammy.
- No surprises. The atmosphere is pretty much like we thought: thin, extremely thin.
- Not enough oxygen to sustain us, but undoubtedly enough for some kind of native animal life.
- Well, like you said, Professor, no surprises.
- Just those frozen vegetables.
- If those Martians are out there, they must be invisible. No movement at all.
- Weirdsville, as my grandmother used to say.
[...]